Mhddfs is a fuse based driver used in Linux distribution. Mhddfs is used to combine several directories, into a single virtual file system. The mhddfs program is also known as user space application which creates a virtual mount point. Developers and users are recommended to use mhddfs for improved productivity. The multi-hard drive disk filesystem (mhddfs) combines directories or hard disks on a union filesystem to create a single, large, virtual filesystem that you can use both locally and via Samba or NF